Tony found a better job in Beijing and________in a middle school there now.
A:taught
B:has taught
C:is teaching
D:will teach
A. B. C. D. E.
设F1和F2为双曲线x24-y2=1的两个焦点,点P在双曲线上,且满足∠F1PF2=90°,则△F1PF2的面积是( )